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Alejandro Bonilla wrote: > Hi, > > I have a few questions about the PM Dual Core and how could it really work > with Linux. Sorry if there are new patches on LKML about any of these things: > > Could each processor or die, have it's own cpufreq scaling governor? > > Is there a way to allow one die to be idle and let the other one normal? > > So in other words, could we manage these processors speedstep, utilization and > workload individually? This depends on your hardware. I was reading the Sossaman data sheet the other day, and it says that the entire chip must run at the same frequency. You can set each core to a different frequency, but the hardware chooses the higher of the two. Likewise, the entire chip can sleep, but individual cores can only go into C1. I imagine the Core Duo is the same. IIRC, the dual-core Opterons behave a little differently but the two cores still have to run at the same frequency. Wes Felter - wesley@felter.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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